Automatically update messages when label is renamed

Hi ncharan511,

I wrote a script to do this. Add this to a custom page or endpoint in studio.

<#-- get the roles of the current user and check for "Administrator"-->
<#assign userRoles = (restBuilder().admin(true).liql("SELECT name FROM roles WHERE users.id = '${user.id?c}'").data.items)![]/>
<#assign admin = "false">
<#list userRoles as role>
    <#if role.name == "Administrator">
        <#assign admin = "true" />
    </#if>
</#list>

<#if admin == "true">
    <p>Reminders! Add new labels to the list of predefined labels <b>first</b> if predefined labels are required. Do not remove old labels from the list of predefined labels until replacement is complete. Alternatively, switch <br>
    to "Use both user-defined and predefined labels". <b>UPDATE</b> If you are only deleting labels they will only be removed from posts with multiple labels, so you no longer need to turn off "Require labels on posts".</p>

    <table>
        <tr>
            <td style="background-color: lightgrey;">Board ID : </td><td><input type="text" id="boardIdTextBox"><td>
        </tr>
        <tr>
            <td style="background-color: lightgrey;">Keyword To Search <span style="font-size: small;">(Alphanumeric Only Can Be Left Blank)</span>: </td><td><input type="text" id="keywordTextBox"></td>
        </tr>
        <tr>
            <td style="background-color: lightgrey;">Old Label To Be Deleted : </td><td><input type="text" id="oldLabelTextBox"></td>
        </tr>
        <tr>
            <td style="background-color: lightgrey;">New Label To Add <span style="font-size: small;">(Can Be Left Blank)</span>: </td><td><input type="text" id="newLabelTextBox"></td>
        </tr>
    </table>
    <br><br>
    <button id="AKchangeLabelButton" style="font-size: x-large;">Go</button>


    <script>
    var boardID;
    var oldLabel;
    var encodedOldLabel;
    var newLabel;
    var keyword;
    var cursor;
    var isMore;
    var deleteOnly = true;

    document.getElementById("AKchangeLabelButton").onclick = function() {replace()};



    function replace(){
        keyword = document.getElementById("keywordTextBox").value;
        if(keyword){
            keyword = '"' + keyword + '"';
        }
        boardID = document.getElementById("boardIdTextBox").value;
        oldLabel = document.getElementById("oldLabelTextBox").value;
        encodedOldLabel = encodeURIComponent(oldLabel);
        newLabel = document.getElementById("newLabelTextBox").value;
        cursor = '';
        isMore = false;
        
        getMessages();

        while (isMore) {
            getMessages();
        }

        console.log('Done')
    }


    /***getMessages function***/
    function getMessages() {
        var getMessageListReq = new XMLHttpRequest();
        var getMessageCall
        if (cursor) {
            getMessageCall = "/api/2.0/search?q=" + encodeURIComponent("SELECT id, labels.count(*) FROM messages WHERE depth=0 AND labels.text = '" + oldLabel + "' and board.id = '" + boardID + "' and (body MATCHES '" + keyword + "' OR subject MATCHES '" + keyword + "') LIMIT 1000 CURSOR '" + cursor + "'");
        } else {
            getMessageCall = "/api/2.0/search?q=" + encodeURIComponent("SELECT id, labels.count(*) FROM messages WHERE depth=0 AND labels.text = '" + oldLabel + "' and board.id = '" + boardID + "' and (body MATCHES '" + keyword + "' OR subject MATCHES '" + keyword + "') LIMIT 1000");
        }
        console.log(getMessageCall);

        getMessageListReq.open("GET", getMessageCall, false);
        
        getMessageListReq.onload = function(){
            var messageList = JSON.parse(getMessageListReq.response);
            console.log(messageList.status);
            if (messageList.data.next_cursor) {
                cursor = messageList.data.next_cursor;
                isMore = true;
            } else {
                isMore = false;
            }

            var size = messageList.data.size;
            
            if (newLabel) {
                for (var i = 0; i < size; i++){				
                    add(messageList.data.items[i].id);
                    del(messageList.data.items[i].id);
                }
            } else {
                for (var i = 0; i < size; i++){				
                    if (messageList.data.items[i].labels.count > 1) {
                        del(messageList.data.items[i].id);
                    }
                }
            }
        }
        getMessageListReq.send();
    }/***end getMessages***/


    /***add function***/
    function add(id){
        var addLabelReq = new XMLHttpRequest();
        var call = "/api/2.0/messages/" + id + "/labels";
        var body = '{"data":{"type":"label","text":"' + newLabel + '"}}';
        addLabelReq.open("POST", call, false);

        addLabelReq.setRequestHeader('Content-type', 'application/json');


        addLabelReq.onload = function(){
            resp = addLabelReq.response;
            console.log(resp);
        }

        addLabelReq.send(body);
    }/***end add***/


    /***del function***/
    function del(id){
        var delLabelReq = new XMLHttpRequest();
        var call = "/api/2.0/messages/" + id + "/labels/" + encodedOldLabel;

        delLabelReq.open("DELETE", call, false);

        delLabelReq.onload = function(){
            resp = delLabelReq.response;
            console.log(resp);
        }
        delLabelReq.send();
    }/***end del***/


    </script>
<#else>
    You are not authorized to access this page. Make sure you are logged in.
</#if>

A few notes:

You have to open the browser console to see what's happening. It will console log the response from each API call so you can make sure there are no errors.

There is a field to enter a keyword. We use this in case we only want to replace a label on a post if a specific keyword is present. You can just leave this blank if you want to just do a straight replace.

Also, you can leave the new label field blank if you only want to delete a label, but not replace it. On our community labels are required, so the script will only do this if there is more than one label on a post. Again, not an issue for your situation where you are replacing one label with another.

Lastly, this is written to only show for users with the "Administrator" role.

I would try it and play with it in stage first. Let me know if you have any questions.